Hidden layer:2. The hidden layer represents the interaction among the
input nodes, which use a nonlinear transformation function that is a
sigmoid function.
Output layer:3. The output layer represents the output variables. The
number of the output nodes is determined by the problem.
The nonlinear transformation function (sigmoid function) that is used by
the hidden nodes to perform the transformation process is
fx
x
()/()=+
−
11e
.
The variable x in the formula represents the input value on each node.
After the network architecture is determined and constructed using these
transformation functions, ...
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